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EP3208000A1 - Appareil, système et procédé pour l'application en revêtement de colle de scellement de cadre - Google Patents

Appareil, système et procédé pour l'application en revêtement de colle de scellement de cadre Download PDF

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Publication number
EP3208000A1
EP3208000A1 EP15778594.0A EP15778594A EP3208000A1 EP 3208000 A1 EP3208000 A1 EP 3208000A1 EP 15778594 A EP15778594 A EP 15778594A EP 3208000 A1 EP3208000 A1 EP 3208000A1
Authority
EP
European Patent Office
Prior art keywords
coating
sealant
coating device
pipe wall
main control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP15778594.0A
Other languages
German (de)
English (en)
Other versions
EP3208000B1 (fr
EP3208000A4 (fr
Inventor
Yangkun JING
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOE Technology Group Co Ltd
Hefei BOE Optoelectronics Technology Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Hefei BOE Optoelectronics Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Publication of EP3208000A1 publication Critical patent/EP3208000A1/fr
Publication of EP3208000A4 publication Critical patent/EP3208000A4/fr
Application granted granted Critical
Publication of EP3208000B1 publication Critical patent/EP3208000B1/fr
Active legal-status Critical Current
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1047—Apparatus or installations for supplying liquid or other fluent material comprising a buffer container or an accumulator between the supply source and the applicator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0225—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work characterised by flow controlling means, e.g. valves, located proximate the outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/04—Pumps having electric drive
    • F04B43/043—Micropumps
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/20—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/20—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators
    • H10N30/202—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators using longitudinal or thickness displacement combined with bending, shear or torsion displacement
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/20—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators
    • H10N30/202—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators using longitudinal or thickness displacement combined with bending, shear or torsion displacement
    • H10N30/2023—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators using longitudinal or thickness displacement combined with bending, shear or torsion displacement having polygonal or rectangular shape
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/20—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators
    • H10N30/202—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators using longitudinal or thickness displacement combined with bending, shear or torsion displacement
    • H10N30/2027—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators using longitudinal or thickness displacement combined with bending, shear or torsion displacement having cylindrical or annular shape
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/20—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators
    • H10N30/204—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators using bending displacement, e.g. unimorph, bimorph or multimorph cantilever or membrane benders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0208—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles
    • B05C5/0212—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles only at particular parts of the articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/14—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by electrical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/10—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an adhesive surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
    • H01L21/67005—Apparatus not specifically provided for elsewhere
    • H01L21/67011—Apparatus for manufacture or treatment
    • H01L21/6715—Apparatus for applying a liquid, a resin, an ink or the like

Definitions

  • Embodiments of the present invention relate to a coating device, a coating system and a coating method.
  • ODF drop fill
  • IPS in-plane switching
  • HPP high resolution process
  • ODF is new high-efficiency technology which integrates a series of technologies such as hot press, liquid crystal fill (LC Fill), end seal, cell cleaner and cell annealing.
  • the ODF technology is as follows: liquid crystals are dropped on a substrate (thin-film transistor (TFT) or color filter (CF)); sealant is uniformly coated on another corresponding substrate; and after the coating and dropping processes are completed, high-accuracy cell-assembly is performed to form a liquid crystal cell.
  • TFT thin-film transistor
  • CF color filter
  • the process sequence can be reduced; the cell gap can be reduced; and the response time can be shortened.
  • most methods in the prior art have the problem of sealant wall-hanging in the case of spraying.
  • Embodiments of the present invention provide a coating device, system and method for sealant coating.
  • One embodiment of the present invention provides a coating device for sealant, which comprises: a sealant storage pipe, wherein the sealant storage pipe is provided with two end portions; one end portion is connected to a gas jet means and the other end portion is connected to a nozzle; a pipe wall of the sealant storage pipe is made from a flexible material; and the pipe wall can be subjected to recoverable inward deformation perpendicular to an axial line of the sealant storage pipe.
  • the flexible material is a piezoelectric material; and the pipe wall is deformed when an electric field is applied and recovered when the electric field is removed.
  • the piezoelectric material is one or more selected from piezocrystal, piezoceramics, piezopolymer and piezoelectric ceramic-polymer composite.
  • the flexible material is a carbon nanotube rubber material; and the pipe wall is deformed when a clamping force is applied and recovered when the clamping force is removed.
  • Another embodiment of the present invention further provides a coating system for sealant, which comprises: a main control unit, a gas source unit connected to the main control unit, deformation control devices, and the foregoing coating device connected to the gas source unit.
  • the main control unit is configured to control the amount of gas introduced from the gas source unit into the coating device, and hence control the amount of glue sprayed out from the coating device.
  • the main control unit is configured to control the deformation control devices to act on the coating device, so that the pipe wall of the sealant storage pipe of the coating device is subjected to inward deformation perpendicular to the axial line of the sealant storage pipe or recovery.
  • the sealant storage pipe is made from a carbon nanotube rubber material
  • the deformation control device includes a clamping component for clamping the sealant storage pipe and a motor connected to the clamping component; and the main control unit is configured to input a control signal into the motor and control the clamping component to apply an inward clamping force from the outside of the pipe wall to the inside, so that the pipe wall is subjected to inward deformation perpendicular to the axial line of the sealant storage pipe.
  • the sealant storage pipe is made from a piezoelectric material;
  • the deformation control devices are electrode assemblies for clamping both sides of the pipe wall; and
  • the main control unit is configured to input a control signal into the electrode assemblies and control the electrode assemblies to apply an inward electric field from the outside of the pipe wall to the inside, so that the pipe wall is subjected to inward deformation perpendicular to the axial line of the sealant storage pipe.
  • the coating system may further comprise a coating pressure machine detection module connected to the main control unit; and the main control unit is configured to receive real time information of glue coated by the coating device, detected by the coating pressure machine detection module, send control information to the gas source unit, and hence control the coating quantity of the coating device.
  • a coating pressure machine detection module connected to the main control unit; and the main control unit is configured to receive real time information of glue coated by the coating device, detected by the coating pressure machine detection module, send control information to the gas source unit, and hence control the coating quantity of the coating device.
  • the coating system may further comprise a coating state detection module connected to the main control unit; and the main control unit is configured to receive real time fluctuation information of glue coated by the coating device, detected by the coating state detection module, send control information to the gas source unit, and hence control the coating quantity of the coating device.
  • a coating state detection module connected to the main control unit; and the main control unit is configured to receive real time fluctuation information of glue coated by the coating device, detected by the coating state detection module, send control information to the gas source unit, and hence control the coating quantity of the coating device.
  • the coating system may further comprise a coating glue position feedback module connected to the main control unit; and the main control unit is configured to receive real time residue information of sealant in the sealant storage pipe of the coating device, detected by the coating glue position feedback module, send control information to the deformation control devices, and hence control the sealant storage pipe to be deformed.
  • a coating glue position feedback module connected to the main control unit; and the main control unit is configured to receive real time residue information of sealant in the sealant storage pipe of the coating device, detected by the coating glue position feedback module, send control information to the deformation control devices, and hence control the sealant storage pipe to be deformed.
  • Still another embodiment of the present invention further provides a coating method for sealant coating, which comprises the following steps: subjecting a pipe wall to recoverable inward deformation perpendicular to an axial line of a sealant storage pipe during spraying; and subjecting the pipe wall to recovery when the spraying ends.
  • the coating method may further comprise: determining the position of a substrate; reading a preset pressure value and converting the preset pressure value into a pulse value; outputting a control signal to a coating device; and detecting the residue of glue in the coating device.
  • the coating method may further comprise: applying an inward force from the outside of the pipe wall to the inside according to the residue of glue in the coating device, so that the pipe wall can be deformed inwards.
  • the coating method may further comprise: coasting sealant by test; detecting the position and the sectional area of coated sealant and determining whether the preset value has been reached; returning to adjust the pressure value and converting the pressure value into the pulse value again if the preset value has not been reached; recording control pulse values of control elements if the preset value has been reached; and taking the recorded control pulse values of the control elements to be initial control pulse values in the case of spraying.
  • the coating device, system and method for sealant coating can effectively avoid the problem of sealant wall-hanging.
  • a hose is recessed by changing the shape of the hose, so that the balancing degree of force applied to the upper portion of airflow glue can be improved.
  • the amount of glue is reduced continuously, stable airflow can be guaranteed and glue coating cannot be changed due to the change of the amount of glue.
  • the sack-back amount can be well controlled by utilization of the outward movement of the pipe wall for sack-back; and the overall sack-back of the glue can be maintained, so that the phenomenon of slight inward breakage of the glue can be avoided.
  • the sealant coated on a glass substrate includes main sealant 1 and auxiliary sealant 2.
  • the main sealant 1 is sealant coated on the circumference of the LCD panel and configured to seal liquid crystal molecules in the LCD panel.
  • the auxiliary sealant 2 is sealant coated at gaps of LCD panels on the entire glass substrate.
  • each sealant coating device When sealant is adopted to coat a glass substrate as shown in FIG. 1 taken as a motherboard, each sealant coating device will be responsible for the positioning of corresponding one column (or one row) of LCD panels on the glass substrate. Supposing that all the sealant as shown in FIG. 1 is coated by the same coating device, at this point, as repeated pauses will occur in the coating process, after each pause, the head of the sealant remained at a coating head of the coating device will be large due to the action of surface tension. In this case, in the case of next coating, the sectional area of the sealant will be uneven; and the sectional area of an initial point of the sealant on the glass substrate is relatively large at the beginning of each coating.
  • Vacuum sack-back is mainly adopted currently. In the vacuum sack-back process, the force applied to the upper portion will be relatively large, so that the glue in the hose is raised up entirely and the inside of the glue will be partially separate and provided with specific bubbles or empty nests, and hence the risk of emptying can be increased.
  • a coating device with a tubular structure is applied on a substrate for sealant coating
  • airflow 3 of compressed dry air (CDA) entering the tubular device is injected from the middle of the top, so that the pressure in the middle of the tube is large and the pressure at the position close to the wall is small; and due to the viscosity of the sealant, the viscosity between glue and glue in partial sealant will be smaller than the viscosity between glue and wall, and hence the sealant "wall-hanging" phenomenon tends to occur in the process of sealant coating.
  • CDA compressed dry air
  • the embodiment of the present invention provides a coating device for sealant.
  • a sealant storage pipe is provided with two end portions; one end portion is connected to a gas jet means (a component connected with the upper end, as shown by a frame 41 in FIG. 3a ) and the other end portion is connected to a nozzle (a component connected to the lower end, as shown by a frame 42 in FIG 3 a) ;
  • a pipe wall 5 of the sealant storage pipe is made from a flexible material; and the pipe wall 5 can be subjected to recoverable inward deformation perpendicular to an axial line of the sealant storage pipe.
  • the balancing degree of the airflow 3 must be adjusted to avoid the phenomenon that the glue in the middle has been emptied but the residual glue on the circumference of the pipe wall 5 cannot be sprayed down.
  • the shape of the pipe wall 5 must be changed, and hence the pipe wall 5 is necessary to be set to be deformable material, preferably flexible deformable material.
  • the means of applying the inward force from the outside of the pipe wall 5 to the inside may be mechanical means, magnetic field means, electric field means, etc.
  • the pipe wall 5 is subjected to inward (recessed) deformation, the balancing degree of the force applied to the upper portion of glue can be improved.
  • the amount of glue is reduced continuously, stable airflow can be guaranteed and glue coating cannot be changed due to the change of the amount of glue.
  • the inward force applied from the outside of the pipe wall 5 may be removed and the pipe wall 5 is recovered under the action of own elasticity (the recess is recovered); and meanwhile, the head of the residual sealant at the coating head of the coating device is sacked back, so that uneven sectional area of the sealant can be avoided.
  • vacuum is not required to be used for forced sack-back on the upper portion, the phenomenon that the inside of the glue is partially separate and provided with bubbles or empty nests as the glue in the tube is raised up entirely due to relatively large force applied to the upper portion can be avoided, and finally the risk of emptying can be avoided.
  • the deformable material of the pipe wall 5 may adopt deformable carbon nanotube rubber material.
  • motors on both sides of the pipe wall 5 are adopted to control clamping component 61 to apply an inward clamping force from the outside of the pipe wall 5 to the inside, so that the pipe wall 5 is subjected to inward (recessed) deformation perpendicular to the axial line of the sealant storage pipe.
  • the applied force may be removed so that the pipe wall 5 can be recovered (the recess is recovered) under the action of own elasticity; and meanwhile, the head of the residual sealant at the coating head of the coating device is sacked back.
  • the deformable material of the pipe wall 5 is, for instance, a piezoelectric material.
  • the piezoelectric material may be piezocrystal, piezoceramics, piezopolymer and piezoelectric ceramic-polymer composite, preferably, the piezopolymer and the piezoelectric ceramic-polymer composite, e.g., polyvinylidene fluoride (PVDF).
  • PVDF polyvinylidene fluoride
  • the piezoelectric material is flexible, have good formability, and can satisfy the requirement on the deformation of the pipe wall 5.
  • electrode assemblies 62 on both sides of the pipe wall 5 are adopted to apply an inward electric field from the outside of the pipe wall 5 to the inside, so that the pipe wall 5 is subjected to inward (recessed) deformation perpendicular to the axial line of the sealant storage pipe.
  • the electric field may be removed so that the pipe wall 5 can be recovered under the action of own elasticity (the recess is recovered); and meanwhile, the head of the residual sealant at the coating head of the coating device is sacked back.
  • the coating device provided by the embodiment of the present invention is adopted for sealant coating, as the inner wall of the hose is deformed inwards, the amount of residual glue in the hose can be reduced, so that the waste of glue can be greatly reduced. For instance, 10g sealant may be saved in one glue change in the sixth generation (6G) production line.
  • FIG. 4 Another embodiment of the present invention further provides a coating system employing the coating device, which, as illustrated in FIG. 4 , comprises: a main control unit, a gas source unit connected to the main control unit, deformation control devices, and the coating device connected to the gas source unit and the deformation control devices.
  • the main control unit is configured to control the amount of gas introduced from the gas source unit into the coating device, and hence control the amount of glue sprayed out from the coating device.
  • the main control unit is configured to control the deformation control devices, so that the coating device is subjected to inward deformation perpendicular to the axial line of the sealant storage pipe or re.
  • the main control unit for instance, may be a central processing unit (CPU), a programmable logic controller (PLC) and other units with computing power. Detailed description will be given below to the coating system.
  • CPU central processing unit
  • PLC programmable logic controller
  • the gas source unit is, for instance, a CDA pressure controller, and for instance, is connected to a gas storage device (a pressure bottle), a compressor or the like; and the coating device includes a sealant storage pipe and a nozzle.
  • the deformation control device may adopt a control device of corresponding type according to actual demands. If the sealant storage pipe is made from a carbon nanotube rubber material, the deformation control device may adopt any device through which the sealant storage pipe can be subjected to inward deformation perpendicular to the axial line of the sealant storage pipe.
  • clamping component are disposed on both sides of the pipe wall 5; and the main control unit is configured to input a control signal into the motor and hence control the clamping component to apply a clamping force applied from the outside of the pipe wall 5, so that the pipe wall 5 is subjected to inward (recessed) deformation perpendicular to the axial line of the sealant storage pipe, as shown in FIG. 3b .
  • the deformation control device may adopt any electrode assembly through which the sealant storage pipe can be subjected to inward deformation perpendicular to the axial line of the sealant storage pipe.
  • electrode slices are disposed on both sides of the sealant storage pipe; the main control unit is adopted to apply an electric field from the outside of the pipe wall 5 to the inside on the electrode slices on both sides of the pipe wall 5; and the electrode slices are configured to clamp the pipe wall 5 under the action of the electric field, so that the pipe wall 5 is subjected to inward (recessed) deformation perpendicular to the axial line of the sealant storage pipe, as shown in FIG. 3c .
  • the pipe wall 5 made from the above two materials is recovered (the recess is recovered) under the action of own elasticity after the applied electric field is removed, so that the head of the residual sealant at the coating head of the coating device can be sacked back.
  • the coating system for sealant may further comprise a coating pressure machine detection module connected to the main control unit.
  • the main control unit is configured to receive real time information of glue coated by the coating device, detected by the coating pressure machine detection module, make corresponding adjustment control command according to the information of glue coated by the coating device, and send control information to the gas source unit;
  • the gas source unit is configured to control the pressure intensity and the amount of gas introduced into the coating device according to the received control signal, control the pressure in the coating device, and hence control the amount of glue sprayed out from the coating device, and finally control the coating quantity of glue.
  • the information of the glue coated by the coating device includes information such as the sectional area of a sealant surface which has been coated, the glue width and the glue position.
  • the main control unit makes corresponding control command according to the information.
  • the coating pressure machine detection module is a seal dispenser vision detection module, e.g., is a machine vision detection system based on a high-resolution industrial camera.
  • the seal dispenser vision detection module is adopted to detect whether the sealant coated by the sealant coating device is qualified.
  • the seal dispenser vision detection module is to determine whether the defects meet the requirements based on the comparison and matching of a defect library.
  • defect detection a detect library is required to be established for items to be detected, and hence whether the defects are qualified is determined by the rapid comparison of physical goods and the defect library instead of the human eyes.
  • the coating system provided by the embodiment of the present invention adopts the seal dispenser vision detection module for non-contact detection and measurement, has higher accuracy and wider spectral response range, can work stably for a long time, and hence saves a large amount of labor resources and greatly improves the working efficiency.
  • the means may also be adopted for detecting the defects such as spots, pits, scratches, color difference and loss on surfaces of workpieces.
  • the coating system for sealant may further comprise a coating state detection module connected to the main control unit.
  • the main control unit is configured to receive real time fluctuation information of glue coated by the coating device, detected by the coating state detection module, send corresponding adjustment control command according to the flotation information of the glue coated by the coating device, and send control information to the gas source unit.
  • the gas source unit is configured to control the pressure intensity and the amount of gas introduced into the coating device according to the received control signal, control the pressure in the coating device, and hence control the amount of glue sprayed out from the coating device, and finally control the coating quantity of glue.
  • the coating state detection module includes an error upper limit setting module.
  • the working process of the coating state detection module is as follows: a fluctuation information error upper limit value is inputted into the coating system for sealant through the error upper limit setting module at first; the upper limit value is stored into a storage unit; and subsequently, coating is performed. For instance, image information of a part, which has been coated by the sealant, on the substrate is captured through a camera; the image information is analyzed and processed by a computing device; fluctuation information error of the coated sealant is compared with a preset error value; if the error exceeds the upper limit of the preset error value, the coating process continues; and if not, the coating pressure information will be temporarily stored into the sealant coating system which will continue to coat sealant on other parts of the substrate.
  • the detection module or device may be merged and combined, and for instance, employs the same hardware system and different processing software sections.
  • the coating system for sealant may further comprise a coating glue position feedback module connected to the main control unit.
  • the main control unit is configured to receive real time residue information of sealant in the sealant storage pipe of the coating device, detected by the coating glue position feedback module, make corresponding adjustment control command according to the residue information of the sealant in the sealant storage pipe, and send control information to the deformation control devices.
  • the deformation control device may apply an inward clamping force from the outside of the pipe wall 5 to the inside according to the received control signal, so that the pipe wall 5 is subjected to inward (recessed) deformation perpendicular to the axial line of the sealant storage pipe.
  • the clamping force applied by the deformation control device from the outside of the pipe wall 5 to the inside may be gradually increased according to the residue information of the coating glue detected by the coating glue position feedback module, so that the sealant storage pipe can be slowly deformed.
  • the coating glue position feedback module for instance, may be achieved by a sensor or a vision processor for detecting the liquid position.
  • the coating system for sealant may further comprise: a mobile module and a photoelectric encoder module respectively connected to the main control unit.
  • the photoelectric encoder module and the mobile module are respectively connected to the coating device.
  • the photoelectric encoder module is configured to detect the sectional area of the currently coated sealant, and the mobile module is configured to control the height between the coating device and the substrate.
  • the main control unit is configured to receive real time sectional area information of the currently coated glue of the coating device, detected by the photoelectric encoder module, and send control information to the gas source unit.
  • the gas source unit is configured to control the pressure intensity and the amount of gas introduced into the coating device according to the received control signal, control the pressure in the coating device, and hence control the amount of glue sprayed out from the coating device.
  • the main control unit sends control information to the mobile module.
  • the mobile module is, for instance, a mobile motor (e.g., a stepping motor).
  • the main control unit is configured to receive the height between the coating device and the substrate, transmitted by the mobile motor, in real time, and send control signal to the mobile motor.
  • the mobile motor is configured to control the movement of a cylinder according to the received control signal, control the distance between the coating device and the substrate, and finally achieve the objective of continuously detecting and adjusting the coating pressure of the coating device and improving the coating quality of the sealant.
  • the embodiment of the present invention further provides a coating method employing the coating device, which comprises the following steps: subjecting a pipe wall to recoverable inward deformation perpendicular to an axial line of a sealant storage pipe during spraying; and subjecting the pipe wall to recovery when the spraying ends. Detailed description will be given below to the coating method.
  • the coating method for sealant coating specifically comprises the following steps: determining the position of a substrate; reading a preset pressure value and converting the preset pressure value into a pulse value; outputting a control signal to a coating device; and detecting the residue of glue in the coating device.
  • a force is applied from the outside of the pipe wall to the inside according to the residue of glue in the coating device, so that the pipe wall is deformed inwards.
  • Sealant is coated by test; the position and the sectional area of coated sealant are detected and whether the preset value has been reached is determined; if the preset value has not been reached, the pressure value is adjusted and converted into the pulse value again; and if the preset value has been reached, control pulse values of control elements are recorded and taken as initial control pulse values in the case of spraying. The force is removed; the pipe wall is recovered; and the substrate is removed.
  • the method provided by the embodiment may further comprise the step of repeating the steps and utilizing a test substrate to test the coating method. After the method is tested and determined to have met corresponding requirements, lots of substrates are introduced and coated according to the recorded control pulse values of the control elements.
  • the coating system sends different control commands to different modules at different time periods as an example.
  • the substrate After the substrate enters a coating area, the substrate must be positioned at first, and the mark position is positioned and prepared for coating.
  • the main control unit reads a pressure value preset by a user at to moment and converts the preset pressure value into a pulse value.
  • the main control unit outputs corresponding control signal to the gas source unit.
  • the gas source unit outputs air after receiving the control signal, so that the sealant in the coating device can be discharged.
  • the deformation control devices are controlled according to the residue information to apply an force from the outside of the pipe wall to the inside gradually, so that the pipe wall is gradually deformed inwards along with the reduced amount of glue.
  • the main control unit outputs corresponding control signal to the gas source unit; and air output is switched off and nitrogen output is switched on.
  • the main control unit outputs corresponding control signal to the mobile module which is slowly started to move the substrate. The coating position and the sectional area are detected and whether the preset value has been reached is determined. If the preset value has not been reached, the pressure value is adjusted and converted into the pulse value again.
  • control pulse values of control elements are recorded and the preset pressure value is updated.
  • the main control unit outputs corresponding control signal to the gas source unit; and nitrogen output is switched off and air output is switched on.
  • the main control unit outputs corresponding control signal to the gas source unit and air output is switched off; and the main control unit outputs corresponding control signal to the deformation control devices, so that the pipe wall is recovered.
  • the main control unit outputs corresponding control signal to the deformation control devices, so that the pipe wall stops deformation recovering; the main control unit outputs corresponding control signal to the mobile module which is slowly started to remove the substrate; and hence the entire coating process ends.
  • the coating device, system and method for sealant coating can effectively solve the problems of sealant wall-hanging, low sack-back accuracy, wide initial coating position, etc.
  • the hose is recessed by the change of the shape of the hose; the balancing degree of the force applied to the upper portion of the airflow glue is improved; stable airflow is guaranteed when the amount of glue is continuously reduced; and glue coating cannot be changed due to the change of the amount of glue.
  • the glue is sacked back by utilization of the outward movement of the pipe wall. Therefore, not only the sack-back amount can be well controlled but also the overall deformation recovering of the glue can be maintained, and hence the phenomenon of slight inside breakage of glue can be avoided.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Coating Apparatus (AREA)
EP15778594.0A 2014-09-30 2015-05-21 Appareil, système et procédé pour l'application en revêtement de colle de scellement de cadre Active EP3208000B1 (fr)

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CN201410523099.3A CN104238202B (zh) 2014-09-30 2014-09-30 一种用于涂布封框胶的涂布装置、涂布系统及涂布方法
PCT/CN2015/079491 WO2016050085A1 (fr) 2014-09-30 2015-05-21 Appareil, système et procédé pour l'application en revêtement de colle de scellement de cadre

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EP3208000B1 (fr) 2021-09-15
WO2016050085A1 (fr) 2016-04-07
US20160252754A1 (en) 2016-09-01
US9700914B2 (en) 2017-07-11
CN104238202B (zh) 2017-05-24
EP3208000A4 (fr) 2018-09-26

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